WO2021117030A1 - A micrometer and a system for water-flow monitoring - Google Patents
A micrometer and a system for water-flow monitoring Download PDFInfo
- Publication number
- WO2021117030A1 WO2021117030A1 PCT/IL2020/051234 IL2020051234W WO2021117030A1 WO 2021117030 A1 WO2021117030 A1 WO 2021117030A1 IL 2020051234 W IL2020051234 W IL 2020051234W WO 2021117030 A1 WO2021117030 A1 WO 2021117030A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- micrometer
- flow monitoring
- flow
- designed
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D4/00—Tariff metering apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
- G01F1/586—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters constructions of coils, magnetic circuits, accessories therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
- G01F1/115—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
Definitions
- the present invention is in the field of water-flow monitoring and management and relates to a system for the monitoring of water- flow in facilities having a plurality of water outlets.
- the present invention relates to a system for monitoring and identifying water-flow (by means of leaks or usage of such outlets) in large, multi-unit housing or commercial complexes.
- a lot of apartment buildings and condominiums are constructed with no central outlet for each apartment, a construction that prevents metering the water-flow used by every individual housing unit.
- a single central water-flow meter is installed in the mainline distributing water to the building, and water usage is billed to the condominium or apartment owner or managing company, based on the overall usage of water consumed by all households, as measured by the central meter. Consequently, the overall cost of water is shared equally or allocated based on a pro-rata share of the total living area, regardless of the actual quantity of water consumed in each housing unit.
- individual tenants do not pay the actual price of excessive, wasteful, or inefficient water usage habits. Nor is there an economic reward to individual tenants who implement water-saving practices.
- water meters are installed in each unit and provide a means for billing tenants directly for the water consumed in their unit.
- US5986573A discloses A method and apparatus for metering building structures having a plurality of service outlets each having control valves, includes the installation of meters within a given distance from each one of the valves.
- a transmission system is coupled electrically to each one of the meters for sending meter readings periodically to a remotely located equipment.
- US5892158 discloses a method for installing a flow meter system and flow meter apparatus.
- the method includes using a flow meter system having a meter assembly and a transmitter device in conjunction with a utility distribution system disposed behind a wall in a space and having a conduit extending through a conduit opening in the wall for coupling a fixture thereto.
- the meter assembly is connected in fluid communication with the conduit and positioned outside of the space and in front of the wall.
- the transmitter device is installed within the space and positioned remotely from the meter assembly.
- the transmitter device is connected electrically to the transmitter device, and the fixture is coupled in fluid communication with the meter assembly, thereby concealing the meter assembly and the conduit opening.
- CN107402051 discloses a flow recorder with a wireless monitoring function.
- the flow recorder comprises a signal collection and control circuit, a 3DR data transmission module, a PC computer, and client-side software.
- a current signal input interface of the signal collection and control circuit arranged outside is connected to a flow meter, and can collect current signal values of the flow meter;
- a control signal output interface of the signal collection and control circuit is connected to an electric regulation valve, and can output voltage signals to control the rotation of a servo motor;
- the PC can be arranged indoors and achieve communication work with the signal collection and control circuit through the 3DR data transmission module;
- the client-side software operates on the PC and completes record and display work of flow meter channel information and control the work of the electric regulation valve through a serial port.
- an object of the present invention to provide for a water-flow multi micro-meter system with a long-lasting power source.
- the system could be installed as a part of the construction or overall plumbing installation yet it could also be provided for DIY installation for owners or tenants.
- the system comprises multiple micrometers designed to be connected to each water outlet within a housing or a commercial unit and measure the water-flow thereof.
- Each of said multiple micrometers comprises a water-flow sensor, a transmission module, a processing unit, and a power unit.
- the micrometer is designed to have a power-saving hibernating mode, in order to maintain a long-lasting battery lifespan.
- the micrometer transmission module is based on a low-power wide-area network (LPWAN).
- LPWAN low-power wide-area network
- the Micrometer is designed to be mounted in a compact housing, attached on one side to the distributing conduit, and on the other side to the water-flow outlet or a pipe connection connected to said outlet. By being placed in the distributing system before each valve or another water outlet the micrometer could not be taken off without causing the water to flow out.
- Fig.l depicts an embodiment of the micrometer 22 according to the present invention.
- the micrometer 22 has a housing 62, The entrance end 642, is designed to be connected to a water distributing conduit, and flow through a tubular member to the exit end 644.
- the exit end 644 is designed to be connected to a water outlet 646.
- the water outlet is a shutter valve.
- the shutter valve 646 could be attached to said exit end 644, by any means like a thread a 'push-fit' or other.
- the water outlet 646 could be permanently fixed to the micrometer, or even be manufactured as part of it.
- the power-saving nature of the micrometer of the present invention provides the ability to mold the casing in a way that it is not openable, and therefore tamper-proof, and it could allow molding the micrometer housing, and other parts thereof with the water outlet as one piece.
- Fig.2 is an exploded view of an embodiment of the micrometer according to the present invention.
- the casing 22 covers a tubular member 64, the tubular member has an entrance end 642 designed to be connected to the distribution conduit, and through which the water enters the micrometer, and an exit end 644 designed to be connected to the water outlet or in the vicinity of a water outlet, and through which the water flows out of the micrometer.
- a rotating member 66 is located inside the tubular member, and in some embodiments, could be secured with two inserts 66a, b. The rotating member is designed to rotate upon the movement of water and allow to calculate the amount and pace of the water flow in accordance with said rotation.
- the rotation is measured with a sensor 54.
- the sensor 54 is magnet-based, thus it could be attached to the outer wall of said tubular member 64 using a sensor casing 54a.
- the sensor is a Hall effect sensor, which allows for an efficient and manageable low power consumption and hibernation mode. It will be understood that any sensor able to sense the rotation of the rotating member is suitable for this invention. Regardless if it senses the rotation through the wall of the tubular member, located inside it, or having a wire connection through it.
- the other components of the micrometer are assembled on a printed circuit board (PCB) 50, and a power unit 52 is connected to said PCB.
- PCB printed circuit board
- the housing When the housing is closed, it covers all parts, apart from the entrance end 642 and the exit end 644, which are extended outside.
- Fig.3 depicts an embodiment of the present invention.
- the micrometer 22 is assembled in the following manner: the entrance end 642 is connected to a water distributing conduit that passes through the wall 82.
- the micrometer is covered by the housing 62 and connected through the exit end 644 to a water outlet 646, in this Figure, a showerhead.
- the connection of both ends could be threaded, 'push-fit', or any other plumbing connection.
- the showerhead could be assembled to the exit end or be manufactured with it as one piece or as a separable component.
- the nature of the invention as a battery saver micrometer allows to install the micrometer on the other side of the wall 82, within the wall or even outside the building, as long as the exit end connected to a conduit or pipe that is closely connected or connectable to the water outlet.
- Fig.4 shows yet another embodiment of the present invention.
- the water outlet 646 is a faucet.
- the body of said faucet is the housing of the micrometer.
- the tubular member 64 is located within said faucet body, and the entrance end is the entrance of the said faucet. Said entrance is connected to the water distributing system.
- the PCB 50 is located within said faucet body, and the exit end 644 is connected to the water exit of said faucet. Similar configurations can be applied with other water outlet components such as showerheads, toilet tank valves, and others.
- Fig. 5 a,b shows a configuration of both sides of a PCB 50, according to some embodiments of the present invention.
- the main processor 58 controls the overall operation of the micrometer.
- the power unit comprises a battery being connected to the power connector 524, and feed the micrometer through a voltage regulator 526.
- the sensor is connected to the PCB 50 through a sensor connector 54b.
- the transmission module 56 is controlling all data traffic from and to the micrometer, using an antenna 562. In this configuration, there is a protection diode 582 aimed to protect the circuit from a reverse current or voltage.
- flash memory unit 56 capable of various tasks such as recording hardware serial number for securing the system from hacking or cloning, allowing an over the air (OTA) firmware or software update, or used to store inner data, to be transmitted as part of the system functions.
- OTA over the air
- Fig.6 is a detailed specification of an example of an architecture of the present invention.
- Fig. 7 is a schematic view of the water consumption monitoring system.
- the system comprises multiple micrometers 22 installed in the multi-unit complex.
- the micrometers 22 are connected in a wireless transmission mean to a gateway 42.
- the gateway is connected to a server 44 either directly or through a cloud 66 or another computer network.
- the present invention relates to a system to monitor water consumption within a housing or business unit located in a complex contains a plurality of such units.
- outlet refers to an endpoint of a distributing conduit of water, which includes all different types of water consumers or distributors such as showerheads, toilets, taps, valves, or others.
- the micrometer of the present invention is designed to have a long battery lifespan in order to avoid the need to open, remove, reassemble or physically intervene with it after installing and for the entire lifespan of the micrometer itself.
- Hibernation includes both technical state of hibernation mode and sleep mode, as well as any other mode intended to lower or shut off power-consuming elements or processes.
- the micrometer 22 of the present invention comprises a housing, a tubular member, a rotating member, a power unit, a sensor, a transmission module, and a processor.
- the housing 62 is the outer envelope of the micrometer. It is designed to keep the components safe and function and allows for easy installment and removal of the micrometer by an authorized party.
- the housing is designed to have a tamper-proof feature. This is due to the main characteristic of the micrometer - being a low voltage consuming and having a hibernation mode, and as a result, having a very long battery life-span. Because there is no need for battery replacement, the housing could be made in a manner that is not openable or having another tamper-proof mean such as breakable component, alerting function, or other.
- the housing could be manufactured by molding or assembling, and it could be made of plastic, rubber, metal, or other materials in accordance with the specific manner of usage.
- the tubular member 64 is the inner water path of the micrometer. It isdesigned to house the rotating member and is connected or connectable to the water distributing conduit with the entrance end 642 and to a water outlet with the exit end 644.
- the rotating member 66 is designed to rotate upon movement of water. In some embodiments of the invention, the rotating member is designed with a special effort to minimize its effect on the water flow stream.
- the initial motion of the rotating member is used to terminate the hibernation mode of the micrometer.
- the rotating member houses the sensor 54, or components thereof, while in a preferred embodiment it is a separate member. It could be made of any material and could have part or all of it, magnetized or magnet sensitive. In other embodiments, it could contain means to exploit water movement into power generating.
- the sensor 54 senses the rotation of the rotating member 66 and could be located anywhere inside the tubular member 64 or on its outer wall. It could have a wire going through the wall of the tubular member, yet in preferred embodiments of the present invention, the sensor is magnet-based and could be attached to the tubular member's outer wall and measure the rotation of the rotating member through it.
- the senor is a Hall effect sensor, and is designed to work with low power consumption and allows for a hibernation mode.
- the power unit could be any power source. Typically it will be a battery 52.
- the power unit further comprises a voltage regulator 526.
- the voltage regulator provides stable voltage for the micrometer while battery consumption is kept low. Another advantage of having a voltage regulator regards the hibernation mode. Some voltage regulators perform the hibernation function and allowing the main processor and other components to be shut wholly or almost entirely.
- the transmission module 56 is wireless communication components. It designed to transmit and receive data from and to the system.
- the transmission module is a low-power wide-area network (LPWAN) this type of wireless communication is long- range and low power consuming, thus suits best for the internet of things (loT) usage.
- LPWAN transmission module could be any of the known platforms such as DASH7, WeightLess, LoRa, Sigfox, or other.
- the advantage of using an LPWAN module is based on two features. Low power consumption allows for long battery life and therefore enables tamper-proof features, both in the structure of the micrometer and in the choice of location (e.g., behind walls). Long-range also allows for a broader range of locations and enhances communication of the system throughout the entire complex of units. Nevertheless, it will be understood to those skilled in the art that any wireless technology is suited and comply with the present invention.
- the processor 58 is a central processing unit (CPU), and preferably a microprocessor unit. It could have internal or external random access memory (RAM) and optionally have a read-only memory (ROM). Said memory functions could be used for self functions and for controlling the entire micrometer functionality.
- the processor 58 performs the hibernation procedures, after switching other components into sleep mode, Yet in the preferred embodiments of the present invention the processor is setting other parts to sleep mode but the entire hibernation function is set by the voltage regulator 526, that set the main processor itself into sleep mode.
- the hibernation mode of the present invention is a state where some or most components of the micrometer are lowering their power consumption to a minimum. On some preferred embodiments, some of the components completely shut down the voltage consumption.
- Entering the hibernation mode and terminating it could be in accordance with predefined parameters.
- Such parameters could be a time gap from last known water flow through the micrometer, a predefined time of the day, the week, the month or the year. The time could be defined manually or could be generated by the system, analyzing the personal data of the specific unit, or big data from overall system users.
- the micrometer terminates the hibernation mode and wakes up its components as a response to the rotation of the rotating member, i.e., as a result of a water-flow through the micrometer and to the specific water outlet. This could be achieved either by a mechanical response to the motion of the rotating member, such as switching or touching a component, through the conversion of movement into an electric signal or by the sensor sensing said motion.
- the hibernation mode could be controlled by the main processor, yet in preferred embodiments of the present invention, it is controlled by a voltage regulator. This configuration allows for even lower power consumption and contributed to the overall life span of the battery and the micrometer as a whole.
- the system of the present invention includes multiple micrometers 22 as described, a gateway 42, and a server 44.
- the micrometers 22 are installed on each water outlet of every unit in the complex, and the gateway is designed to communicate with all the micrometers. Sometimes, when specific conditions require, there are a few gateways that communicate with some of the micrometers each.
- the gateway is compatible with the transmission module.
- the technology used for said communication is an LPWAN technology. Being a low power, wide range and small packet technology ensure that each gateway could handle a large number of micrometers and cover a wide area (both horizontally and vertically).
- the gateway is connected to a server that runs the system database and software applications.
- the connection between the gateway and the server could be direct or through a cloud or other network.
- the system is used to supply data of water usage on a unit or water outlet basis.
- data could be real-time data (e.g., alerts of leakage, water limits or overall consumption) or billing data.
- the system could use the data and analyze it. said analysis could be per individual unit or water outlet or be done on big-data basis. Said analysis could help design demand and usage planning, or other purposes as known in the art.
- the power unit of this configuration comprises a battery and a voltage regulator.
- the battery is connected to a PCB and supply voltage to an Ultra-low standby voltage regulator known commercially by the name MCP1700.
- Said voltage regulator provides a regulated voltage at 3.3VDC for the entire system.
- the main characteristic of MCP1700 is very low standby current.
- the MCP1700 microchip regulator is designed to allow the control of the hibernation function, and therefore allows the main processor to shut off at hibernation mode.
- the sensor is an ultra-low-power consumption Hall Effect sensor known commercially as DRV5012. This sensor measures the rotation of the rotating member and is used to calculate the flow. The rotation is metered by a magnetic part of the rotating member that affects the magnet sensitive sensor.
- the device drives a low voltage.
- the output stays low until a north pole is applied, and the BRP threshold is crossed, which causes the output to drive a high voltage.
- the DRV5012 device samples the magnetic field and updates the output at a rate of 20 Hz or 2.5 kHz, depending on the SEL pin.
- This dual-bandwidth feature can allow systems to monitor changes in movement while using minimal power.
- the main advantage of this sensor is - it has four pins (while regular sensor has only 3), which enable software configurable to toggle between ultra-low-power in sleep/idle mode and high-frequency working mode to measure the flow rate more accurate. This last feature is of significant importance in this featured architecture since the sensor is required to sense the initial motion of the rotating member and kick off the termination of the hibernation mode.
- the transmission module is known commercially as LoRa 1276-Cl module. It is used to send/receive data to a compatible LoRa Gateway. This module is kept in a deep sleep before main processor entering sleep mode. This technology has very low power consumption and could be further put to sleep to extinct, the power consumption completely. Because much energy is consumed when submitting data and LoRa limits data submission through regulation of data flow intervals, the interval between communication sessions of the system is limited by user- configurable submit interval value (1 to 1440 minutes, default to be 120 minutes).
- the main processor is known commercially by the name ATMega328P-AU .
- the main processor controls all the activities of the micrometer components.
- the main processor is kept in deep sleep most of the time. It uses interrupt to wake up only when there is a flow, thus minimized the power consumption.
- the main processor puts the sensor DRV5012 in low power mode and the transmission LoRa and optionally a serial flash memory into sleep mode.
- Serial Flash component it could be used to store the hardware serial code for securing the operation of the system, or as a platform for OTA (e.g., hibernation data, software and firmware updates or configuration attributes):
- the flash memory is used by the main processor.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Volume Flow (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/782,326 US20230003563A1 (en) | 2019-12-12 | 2020-11-30 | Micrometer and a system for water-flow monitoring |
BR112022011475A BR112022011475A2 (en) | 2019-12-12 | 2020-11-30 | MICROMETER AND WATER FLOW MONITORING SYSTEM |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL271409 | 2019-12-12 | ||
IL271409A IL271409A (en) | 2019-12-12 | 2019-12-12 | A micrometer and a system for water-flow monitoring |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021117030A1 true WO2021117030A1 (en) | 2021-06-17 |
Family
ID=76329689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2020/051234 WO2021117030A1 (en) | 2019-12-12 | 2020-11-30 | A micrometer and a system for water-flow monitoring |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230003563A1 (en) |
BR (1) | BR112022011475A2 (en) |
IL (1) | IL271409A (en) |
WO (1) | WO2021117030A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203745017U (en) * | 2013-12-19 | 2014-07-30 | 陕西迅腾通信科技有限公司 | Faucet water meter |
US8994551B2 (en) * | 2006-06-08 | 2015-03-31 | Mueller International, Llc | Systems and methods for remote utility metering and meter monitoring |
US20170184417A1 (en) * | 2015-12-28 | 2017-06-29 | Nudge Systems, LLC | Fluid Flow Sensing Systems and Methods of Use |
US20170370754A1 (en) * | 2016-06-22 | 2017-12-28 | Homebeaver Inc. | Fluid flow measuring and control devices and method |
-
2019
- 2019-12-12 IL IL271409A patent/IL271409A/en unknown
-
2020
- 2020-11-30 BR BR112022011475A patent/BR112022011475A2/en not_active Application Discontinuation
- 2020-11-30 US US17/782,326 patent/US20230003563A1/en active Pending
- 2020-11-30 WO PCT/IL2020/051234 patent/WO2021117030A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8994551B2 (en) * | 2006-06-08 | 2015-03-31 | Mueller International, Llc | Systems and methods for remote utility metering and meter monitoring |
CN203745017U (en) * | 2013-12-19 | 2014-07-30 | 陕西迅腾通信科技有限公司 | Faucet water meter |
US20170184417A1 (en) * | 2015-12-28 | 2017-06-29 | Nudge Systems, LLC | Fluid Flow Sensing Systems and Methods of Use |
US20170370754A1 (en) * | 2016-06-22 | 2017-12-28 | Homebeaver Inc. | Fluid flow measuring and control devices and method |
Also Published As
Publication number | Publication date |
---|---|
BR112022011475A2 (en) | 2022-08-23 |
US20230003563A1 (en) | 2023-01-05 |
IL271409A (en) | 2021-06-30 |
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